I downloaded the Mac version of FTB earlier this week. My system is an iMac with 8 gig of ram. I have a large database, over 46,000 individules. This program took hours to look for duplicates. Many of them had enough critera that they should not have appeared in the duplicate list.
I have been all day workin with about 150 duplicate. Most of them were children duplicated with in the same family. My gedcom was created from Mac's Reunion database program and I would check and did not see a duplication for that family in Reunion.
My disappointment with this program is the length of time it takes to save a change made to the profile or delete a duplicate person. When I would make the change and click the OK option it would take one minute to save that change. I used the clock on my phone as a timer to check the length of time it would take. This was a big disappointment I found in using this program.
I hope this issue will be looked into and the save time won't take so long.